And the explanation of the evidence that this command of the Prophet (peace be upon him) was for recommendation, not obligation, because offering voluntary prayers at home is better than offering them in the mosques.

Sayyiduna Abdullah bin Sa’d (may Allah be pleased with him) narrates that I asked the Messenger of Allah (peace and blessings be upon him) about performing prayer in my house and praying in the mosque. He (peace and blessings be upon him) said:“You see how close my house is to the mosque, but except for the obligatory prayers, I prefer to pray in my house rather than in the mosque.”This is the narration of Janab Bundar.

Because, apart from the obligatory prayers, praying at home is better than praying in the mosque.

Sayyiduna Zaid bin Thabit (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he (peace be upon him) said: "The best prayer of a person is in his house, except for the obligatory prayer." And these are the words of Janab Bundar: "Your most excellent prayer is in your homes, except for the obligatory prayer."

It is narrated from Sayyiduna Zaid bin Thabit (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "O people, perform prayers in your homes, for indeed the best prayer of a person is in his house except for the obligatory prayer (which is better in the mosque)."