Bismillah being divinely revealed

Q: Is it true that basmala was divinely revealed by Allah Ta'ala to Nabi (sallallahu alaihi wasallam) (except in surah naml where it is a verse) and whoever doubts that it might not have been revealed by Allah Ta'ala is a kaafir? I am not talking about the bismillahir rahmanir raheem being a Quraanic verse or part of Quraan, but were those words divinely revealed by Allah Ta'ala and is there tawatur on that?

Hadith on people whose salaah would not rise up beyond their ears

Q: Abu Umamah (radhiyallahu anhu) narrated that Allah's Messenger (sallallahu alaihi wasallam) said: "There are three whose salaah would not rise up beyond their ears: The runaway slave until he returns, a woman who spends a night while her husband is angry with her, and a people's Imaam whom they dislike."

حَدَّثَنَا مُحَمَّدُ بْنُ إِسْمَاعِيلَ، حَدَّثَنَا عَلِيُّ بْنُ الْحَسَنِ، حَدَّثَنَا الْحُسَيْنُ بْنُ وَاقِدٍ، حَدَّثَنَا أَبُو غَالِبٍ، قَالَ سَمِعْتُ أَبَا أُمَامَةَ، يَقُولُ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ ثَلاَثَةٌ لاَ تُجَاوِزُ صَلاَتُهُمْ آذَانَهُمُ الْعَبْدُ الآبِقُ حَتَّى يَرْجِعَ وَامْرَأَةٌ بَاتَتْ وَزَوْجُهَا عَلَيْهَا سَاخِطٌ وَإِمَامُ قَوْمٍ وَهُمْ لَهُ كَارِهُونَ ‏"‏ ‏.‏ قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ مِنْ هَذَا الْوَجْهِ ‏.‏ وَأَبُو غَالِبٍ اسْمُهُ حَزَوَّرٌ ‏.

Classification: Hasan (Good) Jami` at-Tirmidhi, Book of Salaah, Hadith 360

Can you please explain the 3rd point.