Sünen İbn Mâce #3436

مَنْ نَفَّسَ عَنْ مُؤْمِنٍ كُرْبَةً مِنْ كُرَبِ الدُّنْيَا نَفَّسَ اللَّهُ عَنْهُ كُرْبَةً مِنْ كُرَبِ يَوْمِ الْقِيَامَةِ

The Messenger of Allah (ﷺ) said: 'Whoever relieves a believer of a hardship in this world, Allah will relieve him of a hardship on the Day of Judgment.'