Hakim al Umma Mawlana Ashraf Ali Thanawi (Allah have mercy on him) said,

‘It is an abominable practice and (sign of spiritual) debauchery to make bayiah with multiple Shuyukh without a genuine reason.

This results in loss of the blessings (barakah) of bayiah.

Moreover, it befogs the (spiritual beneficence received from the) heart (qalb) of the Shaykh and ripping of the (spiritual) connection (nisbet) is feared.

Such a person gains the reputation of being a (spiritual) delinquent.

Taleemud Deen, page 125-6