Private conversation

بسم الله الرحمن الرحيم

Surat An-Nisā' (The Women) - سورة النساء

4:114

Sahih International

No good is there in much of their private conversation, except for those who enjoin charity or that which is right or conciliation between people. And whoever does that seeking means to the approval of Allah - then We are going to give him a great reward.

http://quran.com/4/114