Some of the Ahadith confirm Arabic being the Godly chosen language and regardless of the authenticity of these Ahadith we can consider its special features and ability to convey meanings and concepts as proof for such a matter.
It has been mentioned in some Ahadith that:
2- In a hadith by the prophet he says: "I like Arabs for three reasons: First because I am Arab myself. Second because the Quran is in Arabic, and third because Arabic is the language people speak in
3- Imam Sadiq narrates a hadith in which his father said: "Allah did not speak to any prophet but in Arabic."
5- Also at the beginning of the world, Prophet Adam spoke Arabic but after he disobeyed Allah and ate from the forbidden tree, Allah expelled him from Heaven and its blessings and replaced it with plain land and plantations. He also took Arabic and substituted it with Syriac. After him the first person to speak Arabic was prophet Ismail. In his first confrontation with the king of ancient Egypt, Prophet Yusuf greeted him in Arabic and prophet Soleiman chose it as the language of worship. It is also said that all ministers of Imam Mahdi will speak Arabic despite the fact that none of them are Arab.
6- This language has shown itself as a holy language in most acts of worship and some Islamic mu’amalat (transactions). In Islam the Adhan, Iqama, Prayer and Talbiyya of Hajj (saying Labbaik Allahumma Labbaik…) and Umrah must be performed in Arabic and it is obligatory for all Muslims to learn the Arabic words used in them. Also the Quran is recited in Arabic and other religious texts like the Duas, Ziyarat and Tasbihat are in Arabic. Even the Islamic beliefs are dictated to one who has just passed away in Arabic (this act is called ‘Talqin’). In some cases, there are discussions in Islamic fiqh to determine whether or not formulas of certain transactions must be performed in Arabic and if it is obligatory, it can have different levels, for instance, despite the different opinions there are among the ulema regarding important issues like marriage and divorce, all agree that the special formula must be recited and it should be done in Arabic if possible. Although the essence of a contract or transaction lays in the intention behind the formula that is verbalized, but regarding important contracts like marriage or divorce there is said to be a divine connection and this is why in such issues the formula must be recited and it should also be recited in Arabic.
Regardless of the chain of narrators of the mentioned Ahadith and whether or not they have been truly stated by a Masoom, they can be prove that Arabic is a special and chosen language. Moreover we must pay attention that first: The great number of this group of Ahadith leaves no need to scrutinize the chain of narrators and secondly, accepting such an issue isn't something unusual and there is no intellectual or narrative reasoning against it.
In any event, Arabic is the language of the Quran, and Allah has chosen this language to convey his everlasting and global message. Its special features and ability to convey different meanings and concepts can be considered proof for it being chosen by Allah, and it is on this premises that the Quran being in Arabic is mentioned as a means of grace and courtesy from Allah in eleven verses of this holy book.
1- Arabic and Different Forms of Worship, Question 146 (website: 890).
2- The Completeness of Arabic, Question 2480 (website: 2621).
 Majlisi, Bihar al-Anwar, vol. 11, pg. 56; vol. 8, pg. 218 and 286 and vol. 10, pg. 81, al-Wafa Institute, Beirut, 1404 ah.
 Ibid, vol. 8, pg. 134.
 Tabarsi, Aminuddin, Tafsir Majma’ul-Bayan, vol. 2, pg. 206, Beyrut, Dar al-Ihya’ al-Torath al-Arabi.
 Majlisi, Bihar al-Anwar, vol. 16, pg. 134 and vol. 18, pg. 263: "ما أنزل الله تبارک و تعالی کتاباً و لا وحیاً إلا بالعربیه؛ فکان یقع فی مسامع ألانبیا بألسنه قومهم و کان یقع فی مسامع نبینا (ص) بالعربیه"
 Majlisi, Bihar al-Anwar, vol. 1, pg. 212 and vol. 76, pg. 127: "تعلموا العربیه فإنها کلام الله الذی یکلم به خلقه " " الوحی ینزل من عند الله عزوجل بالعربیه فاذا أتی نبیا من الانبیا إتاه بلسان قومه"
 Ibid, vol. 25, pg. 29.
 Ibid, vol. 11, pg. 56: "کان لسان آدم العربیه و هی لسان اهل الجنه. فلما عصی ربه أبدله بالجنه و نعیمها الارض و الحرث و بلسان العربیه السریانیه"
 Ibid, vol. 12, pg. 87.
 Ibid, vol. 12, pg. 294.
 Ibid, vol. 14, pg. 112; Ibid, vol. 27, pg. 9 and vol. 38, pp. 58 and 59. Prophet Musa had engraved these sentences on a stone in Hebrew that was discovered after the dawn of Islam mentioning that the teachings of Islam were in Arabic: " باسمک اللهم جاء الحق من ربک بلسان عربی مبین لا اله الا الله، محمد رسول الله، علی ولی الله و کتب موسی بن عمران بیده."
 Muhyiddin ibn Arabi, Al-Futuhat al-Makkiyyah, chapter 366.
 See: Tawfiqi, Husein, Arabi, Nemune’i az Zabane Moqaddas, the Haft Aseman Periodical, no. 27.
 From linguistics’ point of view, Arabic is one of the world’s most comprehensive languages that has the capability of conveying deep meanings in short and beautiful phrases. See: Al-Mizan, vol. 4, pg. 160; Tafsir Nemouneh, vol. 9, pg. 300 and vol. 13, pg. 311; and vol. 21, pg. 8; Pasokh be Porseshaye Mazhabiye Ayatollah Makarem Shirazi va Ayatollah Sobhani, pg. 293.