(a) Sayyiduna Mu'adh bin Jabal (may Allah be pleased with him) said: I saw the Messenger of Allah (peace and blessings be upon him); whenever he performed ablution, he would wipe his face with the edge of his garment.
(b) Abu al-Abbas (may Allah have mercy on him) said: I heard Abu Raja' (may Allah have mercy on him) say that Imam Ahmad bin Hanbal (may Allah have mercy on him) asked me about this hadith, and he wrote it down. The Shaykh (may Allah have mercy on him) said: Its chain is not strong.
(c) It is narrated from Yunus bin Ubayd (may Allah have mercy on him) that sometimes Muhammad bin Sirin (may Allah have mercy on him) too would not use a towel to wipe his face.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 1120