What are the gardens of paradise

Hadhrat Abu Hurayra (Radhiallaahu Anhu) narrates that Rasulullah (Sallallaahu Alayhi Wasallam) said, 'When you pass the gardens of paradise, pluck the fruits.' Rasulullah (Sallallaahu Alayhi Wasallam) was asked, 'What are the gardens of paradise O Rasulullah (Sallallaahu Alayhi Wasallam).' He said, 'The Masaajid.' He was asked about plucking its fruits, he said, 'Subhaanallah, Alhamdulillah, Laa Ilaaha illa Allaahu and Allaahu Akbar.' (Mishkaat pg.70; Qadeemi)