Mishkat al-Masabih #308
Purification
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَعَن ابْن عُمَرَ أَنَّ عُمَرَ بْنَ الْخَطَّابِ رَضِيَ اللَّهُ عَنْهُ قَالَ: إِن الْقبْلَة من اللَّمْس فتوضؤوا مِنْهَا
Ibn ‘Umar reported ‘Umar b. al-Khattab as saying, “A kiss is connected with sexual intercourse, so perform ablution on that account.”
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About Mishkat al-Masabih
This hadith is #308 from Mishkat al-Masabih, in the Book of Purification.