Those who consider ruku before joining the row to be disliked

Hazrat Abu Huraira says that do not say the Takbeer until you join the row.

Hasan was asked about the person who performs rukū‘ before joining the row. He replied that he should not perform rukū‘.

Hazrat Mughira says that I asked Ibrahim, "When I enter the mosque and the Imam is in the state of bowing (ruku'), can I perform ruku' without joining the row (saff)?" He replied, "You should not do so."

Hazrat Abu Hurairah says that when you enter the mosque and the Imam is in the state of bowing (ruku‘), do not say the takbeer until you join the row. Hazrat Abu Bakr says that if there is another person with him, he may perform ruku‘ before joining the row, but if he is alone, he should not perform ruku‘.

2660 - Abu Bakr said: If he and another are present, they should bow (ruku‘) behind the row; but if he is alone, he should not bow.