Forty Hadith of Shah Waliullah Dehlawi
أربعون شاه ولي الله الدهلوي
Hadith 11, 40 Hadith Shah Waliullah 
It is unlawful for a believer to sever relations with his brother for more than three days.
لَا یَحِلُّ لِمُؤمِنٍ اَنْ یَّجُهْرَ أخَاهُ فَوقَ ثَلَاثَةِ أیَّامٍ
Reference : Hadith 11, 40 Hadith Shah Waliullah