وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : " إِنَّ الدُّعَاءَ يَنْفَعُ مِمَّا نَزَلَ وَمِمَّا لَمْ يَنْزِلْ فَعَلَيْكُمْ عِبَادَ اللَّهِ بِالدُّعَاءِ " . قَالَ أَبُو عِيسَى : هَذَا حَدِيثٌ غَرِيبٌ ، لَا نَعْرِفُهُ إِلَّا مِنْ حَدِيثِ عَبْدِ الرَّحْمَنِ بْنِ أَبِي بَكْرٍ الْقُرَشِيِّ وَهُوَ الْمَكِّيُّ الْمُلَيْكِيُّ وَهُوَ ضَعِيفٌ فِي الْحَدِيثِ ضَعَّفَهُ بَعْضُ أَهْلِ الْعِلْمِ مِنْ قِبَلِ حِفْظِهِ ،
And the Messenger of Allah (ﷺ) said: "Supplication benefits against calamity that has descended and that which has not yet descended, so O servants of Allah! You must supplicate to Allah continuously." © Imam Tirmidhi says:
1- This hadith is gharib,
2- We know it only from the narration of Abdur Rahman bin Abu Bakr Qurashi, he is Maliki, and he is considered weak in hadith. Some scholars have regarded him as weak in terms of memory.
´Ibn `Umar narrated that the Messenger of Allah (ﷺ) said:` “Whomsoever of you the door of supplication is opened for, the doors of mercy have been opened for him. And Allah is not asked for anything - meaning - more beloved to Him, than being asked for Al-`Āfiyah.” And the Messenger of Allah (ﷺ) said: “The supplication benefits against that which strikes and that which does not strike, so hold fast, O worshippers of Allah, to supplication.”