Q- Is it established in any Hadith that standing and wearing the trouser and sitting and tying the turban is a source of forgetfulness and poverty?
The above is mentioned by certain ‘Ulama. This is probably based on people’s personal experience and should therefore not be understood as being based on any Hadith. ‘Allamah Muhammad ibn Ja’far Al Kattani (rahimahullah) says there is no chain found for this to prove it as being from Hadith. (Ad Di’amah, pg. 107. Also see Al Ajwibatul Mardiyyah, vol. 2 pg. 539)
And Allah Ta’ala Knows Best