The most disadvantageous thing
Hazrat'e Sayyiduna Sufyan bin Abdullah (radi Allahu ta’ala anhu) has said "Once I asked the Holy Prophet (sallallahu ta’ala alaihi wa’sallam): Oh Prophet of Allah (sallallahu ta’ala alaihi wa’sallam) what you would recommend to me as the most dangerous and most disadvantage thing? So the Holy Prophet (sallallahu ta’ala alaihi wa’sallam) caught hold of his tongue and replied "This". (Tirmizi)
Hazrat'e Sayyiduna Sufyan bin Abdullah (radi Allahu ta’ala anhu) has said "Once I asked the Holy Prophet (sallallahu ta’ala alaihi wa’sallam): Oh Prophet of Allah (sallallahu ta’ala alaihi wa’sallam) what you would recommend to me as the most dangerous and most disadvantage thing? So the Holy Prophet (sallallahu ta’ala alaihi wa’sallam) caught hold of his tongue and replied "This". (Tirmizi)