‏الصلاة : Hadeeth No:1792 Abu Wa'il reported: A person came to 'Abdullah, who was called Nahik b. Sinan, and the rest of the hadith is the same but for this:" Alqama came to him ('Abdullah b. Mas'ud) and we said to him: Ask him about the manners in which he combined (two surahs) in one rak'ah. So he went to him and asked him...

‏البر والصلة والآداب‏ : Hadeeth No:6312 This hadith has been narrated on the authority of A'mash with the same chain of transmitters....