He heard the Messenger of Allah ﷺ say, "When you hear the caller to prayer, repeat what he says, then send blessings upon me, for whoever sends one blessing upon me, Allah will send ten blessings upon him in return. Then ask Allah to grant me al-wasilah, for it is a rank in Paradise befitting only one of the servants of Allah, and I hope that I will be that one. Whoever asks that I be granted al-wasilah, my intercession will be granted to him."
حدثنا أبو عبد الرحمن حدثنا حيوة أخبرنا كعب بن علقمة أنه سمع عبد الرحمن بن جبير يقول إنه سمع
إنه سمع رسول الله ﷺ يقول إذا سمعتم مؤذنا فقولوا مثل ما يقول ثم صلوا علي فإنه من صلى علي صلاة صلى الله عليه بها عشرا ثم سلوا لي الوسيلة فإنها منزلة في الجنة لا تنبغي إلا لعبد من عباد الله وأرجو أن أكون أنا هو فمن سأل لي الوسيلة حلت عليه الشفاعة
Its isnad is sahih. Kaab bin Alqama Tanukhi Misri, his reliability has already been established at 5640, and we add here that Bukhari mentioned him in Kabir 1/225/22.Abdul-Rahman bin Jubayr, the jurist, expert in inheritance law, and muezzin, was a reliable Tabii from Egypt. He was deemed reliable by Nasai, Ibn Hibban, and others. Ibn Lahia said, "He was learned in inheritance law, and Abdullah bin Amr was impressed by him." Ibn Yunus said, "He was a jurist, learned in recitation."He is not the same person as Abdul-Rahman bin Jubayr bin Nufayr. Tirmidhi, in his Sunan 4/294, quoted Bukhari as saying, "This Abdul-Rahman bin Jubayr is a Qurayshi and an Egyptian, while Abdul-Rahman bin Jubayr bin Nufayr is a Syrian." He was a Qurayshi by clientage, for in Sunan Nasai 1/110 it states that he was a client of Nafi bin Amr Qurashi.Ibn Kathir mentioned him in his tafsir 3/145, citing Sahih Muslim.This hadith was narrated by Tirmidhi 4/294 from Bukhari, from Abdullah bin Yazid Muqri, the teacher of Ahmad here, with this same isnad. Likewise, Nasai narrated it 1/110 from Suwayd, from Abdullah bin Yazid. Tirmidhi said, "This is a hasan sahih hadith."Muslim narrated it 1/113 from Muhammad bin Salama, from Abdullah bin Wahb, from Haywa and Saeed bin Abu Ayub and others, from Kaab bin Alqama. Likewise, Abu Dawud narrated it, hadith 523 (1/206-207 of Awn al-Mabud), from Muhammad bin Salama, from Ibn Wahb, from Ibn Lahia, Haywa, and Saeed bin Abu Ayub, from Kaab bin Alqama. So it was Ibn Lahia whom Muslim left unnamed with his phrase "and others."Bayhaqi narrated it in Sunan al-Kubra 1/409-410 through chains going back through Abdullah and through Ibn Wahb.As for his statement, "the intercession shall be his due," in (m) it reads "my intercession." What appears here matches what is in (h), and it agrees with all the other narrations we have mentioned, except for the narrations of Bayhaqi.