Assalam u alaykum, can we contribute in construction of mosque if yes then what will be the reward? As far as I know Prophet Mohammed (pbuh) said whoever construct the mosque, Allah will build the palace for him in Jannah. But how about if someone is contributing a little money in construction of mosque what reward he will gets?
allah rewards as per niyah(intention) not on the basis of amount
if you contribute in building mosque it will be sawab -e -jariya(reward even after your death )
Narrated Abu Hurairah [رضی اللّٰہُ عنہ]: "The Messenger of Allah [صلی اللہ علیہ وسلم] said: "The good deeds that will reach a believer after his death are: knowledge which he learned and then spread; a righteous son whom he leaves behind; a copy of the Qur'an that he leaves as a legacy; a mosque that he built; a house that he built for wayfarers; a canal that he dug; or charity that he gave during his lifetime when he was in good health. These deeds will reach him after his death."
[Ibn Majah: 224]