ALLAH 
SAYS: “And We have sent no Messenger but [speaking] in the language of his people so that he might explain to them.” [1].
SAYS: “And We have sent no Messenger but [speaking] in the language of his people so that he might explain to them.” [1].
We relate in the Ṣaḥīḥs of al-Bukhārī and Muslim that the Messenger of Allah 
said to Mu‘ādh 
, when he made the congregational ṣalāh a long one: “Are you looking for trouble, Mu‘ādh?” [2].
said to Mu‘ādh , when he made the congregational ṣalāh a long one: “Are you looking for trouble, Mu‘ādh?” [2].We relate in the Ṣaḥīḥ of al-Bukhārī that ‘Alī said: “Speak to people about things which they can understand. Do you want Allah and His Messenger to be denied?” [3].
said: “Speak to people about things which they can understand. Do you want Allah and His Messenger to be denied?” [3].References
[1] Qur’ān 14:4.
[2] Al-Bukhārī (705) and Muslim (465).
[3] Al-Bukhārī (127).