Bulugh al-Maram 2 The Book of Prayer كتاب الصلاة 445

وَعَنْ أَنَسٍ قَالَ: { أَصَابَنَا -وَنَحْنُ مَعَ رَسُولِ اَللَّهِ- – صلى الله عليه وسلم -مَطَرٌ قَالَ: فَحَسَرَ ثَوْبَهُ, حَتَّى أَصَابَهُ مِنَ اَلْمَطَرِ, وَقَالَ: “إِنَّهُ حَدِيثُ عَهْدٍ بِرَبِّهِ” } رَوَاهُ مُسْلِمٌ. 1 . 1 – صحيح. رواه مسلم (898).

Narrated [Anas (RA)]: Rain fell upon us while we were with Allah’s Messenger (صلى الله عليه وسلم). He opened his garment till some of the rain fell upon him. He then said, “It has only recently been created by its Rabb.” [Reported by Muslim].