Is contributing to the building of a hall in a mosque for teaching the Quran and reading to children under six years of age considered an ongoing charity (Sadaqa Jariyah) on behalf of a deceased mother?

Building a hall for teaching the Quran falls under ongoing charity (sadaqah (definition) jariyah). Whoever participates in its construction will receive a reward commensurate with their contribution. This is one form of ongoing charity, like building schools. Giving charity on behalf of a deceased mother is considered an act of righteousness and kindness towards her, based on the hadith (definition) of Ibn Abbas: "Will it benefit her if I give charity on her behalf?" He said: "Yes."