What is the meaning of the Prophet's prayer (peace be upon him) being "mutagaribah" (close-knit), and was his standing (qiyam) equal to the rest of the pillars, and did he pray in this manner both by night and by day in all supererogatory prayers without exception?

The authenticity of the Prophet's prayers (peace be upon him) being proportionate means that he would prolong his bowing (ruku') and prostration (sujud (definition)) if he prolonged his standing (qiyam (definition)), and shorten them if he shortened his standing. Thus, his prayer would be of a consistent length. This does not mean that his bowing and prostration were equal in duration to his standing, but rather the intention is proportionality between the pillars of the prayer. In the Hadith (definition) of Al-Bara' (may Allah be pleased with him): "The Prophet's (peace be upon him) bowing (ruku') and prostration (sujud), and when he raised his head from bowing, and between the two prostrations, were close to being equal." Some narrations have excluded standing and sitting from this proportionality. The intention is that the length of standing and sitting was appropriate to the length of bowing, prostration, and the two intermediate postures, so that there would not be a significant disparity between them.