عَنْ عَمْرِو بْنِ عَبَسَةَ رَضِيَ اللَّهُ عَنْهُ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ: ((مَنْ بَنَى لِلَّهِ مَسْجِدًا لِيُذْكَرَ اللَّهُ عَزَّ وَجَلَّ فِيهِ بَنَى اللَّهُ لَهُ بَيْتًا فِي الْجَنَّةِ، وَمَنْ أَعْتَقَ نَفْسًا مُسْلِمَةً كَانَتْ فِدْيَتَهُ مِنْ جَهَنَّمَ، وَمَنْ شَابَ شَيْبَةً فِي سَبِيلِ اللَّهِ عَزَّ وَجَلَّ كَانَتْ لَهُ نُورًا يَوْمَ الْقِيَامَةِ))
It is narrated from Sayyiduna Amr bin Abasah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Whoever builds a mosque for Allah so that Allah’s name will be mentioned therein, Allah will build a house for him in Paradise. And whoever frees a Muslim slave, it will be a ransom for him from Hell. And whoever grows old in the way of Allah, that old age will be a light for him on the Day of Resurrection.