Narrated Anas: The Prophet used to pray a short prayer (in congregation) but used to offer it in a perfect manner.
Related hadith on this topic
Explanation & Benefits
Shaykh Abdul Sattar al-Hammad
Hadith Commentary:
Imam Bukhari rahimahullah intends to establish that brevity in prayer does not contradict its perfection, because from the Messenger of Allah sallallahu alayhi wa sallam, both brevity and perfection in prayer are proven. Therefore, it is recommended that one should not prolong the prayer to such an extent that it becomes burdensome for the followers (muqtadis), nor should it be so brief that it causes deficiency in the pillars (arkan) and proper composure (ta'dil).
This is clarified in a hadith: Hazrat Anas radi Allahu anhu states that he never prayed behind any imam who performed the prayer more briefly and more perfectly than the Messenger of Allah sallallahu alayhi wa sallam.
(Sahih al-Bukhari, al-Adhan, Hadith: 708)
Source: Hidayat al-Qari: Commentary on Sahih Bukhari, Urdu, Page: 706
Maulana Ataullah Sajid
Benefit:
From this, the meaning of lightening the prayer becomes clear: that the acts (arkaan) of the prayer should be performed with complete humility (khushu‘) and tranquility (itmi’nan), but the amount of recitation (tilawah) and glorifications (tasbihat) should not be so excessive that the followers (muqtadis) become distressed.
Source: Commentary on Sunan Ibn Mājah by Mawlānā ‘Atā’ullāh Sājid, Page: 985