Abu Sa'id al-Khudri reported that the Prophet, may Allah bless him and grant him peace, said, "No Muslim makes supplication - unless he is someone who has cut off his relatives - but that he is given one of three things: either his supplication is answered quickly, or it is stored up for him in the Next World, or an evil equal to it is averted from him." It was said, "Then many supplications will be made." He replied, "Allah has more still to give."
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا إِسْحَاقُ بْنُ نَصْرٍ، قَالَ: حَدَّثَنَا حَمَّادُ بْنُ أُسَامَةَ، عَنْ عَلِيِّ بْنِ عَلِيٍّ قَالَ: سَمِعْتُ أَبَا الْمُتَوَكِّلِ النَّاجِيَّ قَالَ: قَالَ أَبُو سَعِيدٍ الْخُدْرِيُّ، عَنِ النَّبِيِّ صلى الله عليه وسلم: مَا مِنْ مُسْلِمٍ يَدْعُو، لَيْسَ بِإِثْمٍ وَلاَ بِقَطِيعَةِ رَحِمٍ، إِلاَّ أَعْطَاهُ إِحْدَى ثَلاَثٍ: إِمَّا أَنْ يُعَجِّلَ لَهُ دَعْوَتَهُ، وَإِمَّا أَنْ يَدَّخِرَهَا لَهُ فِي الْآخِرَةِ، وَإِمَّا أَنْ يَدْفَعَ عَنْهُ مِنَ السُّوءِ مِثْلَهَا، قَالَ: إِذًا نُكْثِرُ، قَالَ: اللَّهُ أَكْثَرُ.
sunnah.com