Full Sharh — Muwatta Malik 94
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، أَنَّهُ قَالَ كُنْتُ مَعَ عَبْدِ اللَّهِ بْنِ عُمَرَ فِي سَفَرٍ فَرَأَيْتُهُ بَعْدَ أَنْ طَلَعَتِ الشَّمْسُ تَوَضَّأَ ثُمَّ صَلَّى قَالَ فَقُلْتُ لَهُ إِنَّ هَذِهِ لَصَلاَةٌ مَا كُنْتَ تُصَلِّيهَا . قَالَ إِنِّي بَعْدَ أَنْ تَوَضَّأْتُ لِصَلاَةِ الصُّبْحِ مَسِسْتُ فَرْجِي ثُمَّ نَسِيتُ أَنْ أَتَوَضَّأَ فَتَوَضَّأْتُ وَعُدْتُ لِصَلاَتِي .
English Translation
Yahya related to me from Malik from Nafi that Salim ibn 'Abdullah said, "I was with Abdullah ibn Umar on a journey and after the sun had risen I saw him do wudu and then pray. So I said to him, 'This isn't a prayer that you normally do. 'He said, 'After I had done wudu for the subh prayer, I touched my genitals. Then I forgot to do wudu. So I did wudu again and repeated my prayer
Source
Muwatta Malik(موطأ مالك)
Purity
Hadith Number
94
Grade
Mauquf Sahih