1. The Book of Purification and its Sunnah - كتاب الطهارة وسننها
'Abdullah bin Abu Qatadah said:
"My father told me that he heard the Messenger of Allah say: 'When anyone of you urinates, let him not touch his penis with his right hand nor clean himself with his right hand.'"
Another chain with similar wording.
Reference: 310English reference: Vol. 1, Book 1, Hadith 310Arabic reference: Book 1, Hadith 330In-book reference: Book 1, Hadith 44Grade: Sahih (Darussalam)Read this hadith from Darussalam Collection
حَدَّثَنَا هِشَامُ بْنُ عَمَّارٍ، حَدَّثَنَا عَبْدُ الْحَمِيدِ بْنُ حَبِيبِ بْنِ أَبِي الْعِشْرِينَ، حَدَّثَنَا الأَوْزَاعِيُّ، عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ، حَدَّثَنِي عَبْدُ اللَّهِ بْنُ أَبِي قَتَادَةَ، أَخْبَرَنِي أَبِي أَنَّهُ، سَمِعَ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يَقُولُ . " إِذَا بَالَ أَحَدُكُمْ فَلاَ يَمَسَّ ذَكَرَهُ بِيَمِينِهِ وَلاَ يَسْتَنْجِ بِيَمِينِهِ "