al-Muʿjam al-Awsat (1/28/1), and al-Bayhaqi in al-Sunan al-Kubra (2/236), through two routes from Musa ibn ʿUqbah, from Nafiʿ, from Ibn ʿUmar, who said: The Messenger of Allah, peace and blessings be upon him, said—and he mentioned it.

I say: This is an authentic chain of transmission according to the criteria of the two Shaykhs. Al-Haythami said of the hadith in al-Majmaʿ (2/51): “Al-Tabarani narrated it in al-Kabir, and its chain is good.”

I say: This is because its chain includes Zuhayr ibn ʿAbbad, concerning whom there is disagreement. However, al-Bayhaqi’s route is free of him; thus, the hadith is authentic, praise be to Allah. His reference to al-Kabir was perhaps a slip of the pen or a typographical error, for al-Tabarani narrated it only in al-Awsat, as you have seen. Moreover, he was aware of this, since he attributed it to that work in his Zawaʾid, from which I have quoted. Had his reference to al-Kabir been correct, he would have added al-Awsat as well. And Allah knows best.

Note: Abu Dawud and others recorded the first half of the hadith. See Sahih Abi Dawud (645).

1370 — “If a matter arises for one of you which he fears will pass him by, then let him perform this prayer.” (That is, combining the two prayers.)

Al-Nasaʾi recorded it (1/98), as did al-Tabarani in al-Muʿjam al-Kabir (3/194–2/1), through Yazid ibn Zurayʿ, who said: Kathir ibn Qarawand related to us—al-Tabarani said: Ibn Qanbar—who said: We asked Salim ibn ʿAbd Allah about his father’s prayer while travelling. He related from his father, who said: The Messenger of Allah, peace and blessings be upon him, said—and he mentioned it. Ibn Shumayl corroborated him, saying: Kathir ibn Qarawand related to us in the same manner. Al-Nasaʾi recorded it (1/99).