The Prophet ﷺ said: Two (prayers) are not rejected, or seldom rejected: Prayer at the time of the call to prayer, and (the prayer) at the time of fighting, when the people grapple with each other. Musa said: Rizq ibn Sa'id ibn AbdurRahman reported from AbuHazim on the authority of Sahl ibn Sa'd from the Prophet ﷺ as saying: And while it is raining. (Using translation from Abū Dāʾūd 2540)
قَالَ رَسُولُ اللَّهِ ﷺ ثِنْتَانِ لَا تُرَدَّانِ أَوْ قَالَ قَلَّ مَا تُرَدَّانِ الدُّعَاءُ عِنْدَ النِّدَاءِ أَوْ عِنْدَ الْبَأْسِ حِينَ يُلْحِمُ بَعْضُهُمْ بَعْضًا قَالَ مُوسَى بْنُ يَعْقُوبَ وَحَدَّثَنِي رِزْقُ بْنُ سَعِيدِ بْنِ عَبْدِ الرَّحْمَنِ الْمَدَنِيُّ عَنْ أَبِي حَازِمٍ عَنْ سَهْلِ بْنِ سَعْدٍ عَنِ النَّبِيِّ ﷺ قَالَ «وَتَحْتَ الْمَطَرِ»