A man’s friend had a problematic wife, so he supplicated for him: ‘May Allah grant you another wife!’
His own wife started beating him… he asked why??
She said: Did you think that I was unaware of the Hadith in which the Prophet said:
مَا مِنْ عَبْدٍ مُسْلِمٍ يَدْعُو لأَخِيهِ بِظَهْرِ الْغَيْبِ إِلاَّ قَالَ الْمَلَكُ وَلَكَ بِمِثْلٍ
“When a Muslim supplicates for his brother in his absence, the Angels say: “The same be for you too.”
[“Sahih Muslim”, 2732a].
https://sunnah.com/muslim:2732a
