It is narrated from Sayyiduna Khallad (may Allah be pleased with him) that he heard the Prophet (peace and blessings be upon him) saying: "When one of you relieves himself, let him wipe (perform istinja) three times."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Ibn Shihab (may Allah have mercy on him) except his nephew, and no one from the nephew of Ibn Shihab (may Allah have mercy on him) except Abu Ghassan (may Allah have mercy on him); Muhammad bin Yahya al-Naysaburi (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الألف / 1696
Hadith Takhrij«أخرجه الطبراني فى «الكبير» برقم: 6623، 6624»