3. From 'Abdullaah bin Amr Ibn al-Aas that Allaah's Messenger (sallallaahu alaihi wasallam) said, "Convey (knowledge) from me, even if it is a single aayah. And narrate from Banee Israa'eel, there is no harm in that. And whoever intentionally lies upon me, let him find his seat in the Hellfire."
Saheeh Bukhaaree (2/492, no.3461), Saheeh at-Tirmidhi (1250), Saheeh Jaami' us-Sagheer (2834), Takhreej ul-Ilm of Abu Khaithumah (45/119) (the latter three are all of al-Albaani), Jaami' Bayaan ul-Ilm of Ibn Abdul-Barr (no. 94), and the meaning of "aayah" is "a sentence", regardless of whether it is from the Book or the Sunnah.
4. From Abu Hurairah that Allaah's Messenger (sallallaahu alaihi wasallam) said, "Narrate from Banee Israa'eel, there is not harm in it, and narrate from me, but do not lie upon me".
Refer to the previous hadeeth (no.3) for takhreej.
His (sallallaahu alaihi wasallam's) Saying, "Let the One Who Is Present Amongst You Convey To the One Who Is Absent
5. From Abu Bakrah who said that Allaah's Messenger (sallallaahu alaihi wasallam) said, "Let those who are present amongst you convey to those who are absent, for perhaps the one who who is informed (i.e. by you) is understands better than the one who hears (from me directly)".
6. Also from him that the Prophet (sallallaahu alaihi wasallam) said in the Farewell Pilgrimage, "Let the one who is present amongst you convey to the one who is absent, perhaps the one who is informed (i.e. by you) is a better memoriser than the listener".
The above hadeeths are in Saheeh al-Bukhaaree (3/573-574, no. 1741) and Saheeh Muslim (1679).
Abu Haatim ar-Raazee said, "Spreading of knowledge is its life, and conveying from Allaah's Messenger (sallallaahu alaihi wasallam) is mercy which every believer clings on to, and it is a hujjah (proof) against every one who passes it by and every deviant".
Al-Awzaa'ee said, "When Innovations emerge and the People of Knowledge do not show rejection against them, they become the Sunnah".