All good deeds are rewarded, even small deeds

Narrated Abu Dharr (ra): The Prophet (sa) said: “Do not regard any good deed insignificant, even meeting your brother with a cheerful face.”

[Sahih Muslim, Book 032, Number 6359]

عَنْ أَبِي ذَرٍّ، قَالَ قَالَ لِيَ النَّبِيُّ صلى الله عليه وسلم لاَ تَحْقِرَنَّ مِنَ الْمَعْرُوفِ شَيْئًا وَلَوْ أَنْ تَلْقَى أَخَاكَ بِوَجْهٍ طَلْقٍ