Ruling on lawfulness of all other Masjids than the three Masjids

A: First: This trend is null and void, for the Muslims are originally upright and faithful unless otherwise proven. The Prophet (peace be upon him) condemned the act of Usamah ibn Zayd when the latter killed a disbeliever after declaring Shahadah (Testimony of Faith). Usamah thought that the man declared Shahadah out of fear of death. The Prophet said, Did you check inside his heart to find out whether he said it (out of fear) or not? Second: All Muslims' Masjids worldwide are honored and valid for Salah. During the era of the Messenger of Allah (peace be upon him), the Rightly-Guided Caliphs, and the other succeeding eras, (Part No. 2; Page No. 50) there was an abundance of Masjids. No one ever denied the validity of Salah therein. Allah (Exalted be He) says, And the mosques are for Allâh (Alone): so invoke not anyone along with Allâh. The Prophet (peace be upon him) said, Anyone who builds a Masjid for the sake of Allah, Allah will build a house for him in Paradise. And, Anyone who hears the call (to prayer) and does not come, then his prayer does not count, unless he has a (valid) excuse. Ibn `Abbas was asked: What is this excuse? He answered that it is an illness or fear. Moreover, Muslim narrated in his Sahih, A blind man came to the Prophet (peace be upon him) and said, "O Messenger of Allah! I have no one to guide me to the mosque." He, therefore, asked Allah's Messenger (peace be upon him) permission to offer prayer in his house. He (the Prophet) called him and said, "Do you hear the call to prayer?" He said, "Yes." He (the Prophet then) said, "Respond to it." There are many well-known Hadith indicating the obligation and virtue of performing Salah in Masjids.As for the three Masjids, they are the best Masjids. (Part No. 2; Page No. 51) Thus, the reward of performing Salah in them is multiplied and so people travel to pray therein. Claiming that Salah in any Masjid other than the three Masjids is null and void is wrong and goes against the Qur'an, Sunnah and Ijma` (consensus).May Allah grant us success. May peace and blessings of Allah be upon our Prophet Muhammad, his family and Companions.