Mishkat al-Masabih
Mishkat al-Masabih 332
Circumstances which make ablution necessary - Section 3
Arabic hadith text
وَعَن ابْن عُمَرَ أَنَّ عُمَرَ بْنَ الْخَطَّابِ رَضِيَ اللَّهُ عَنْهُ قَالَ: إِن الْقبْلَة من اللَّمْس فتوضؤوا مِنْهَا
Translation
Ibn ‘Umar reported ‘Umar b. al-Khattab as saying, “A kiss is connected with sexual intercourse, so perform ablution on that account.”