The bill bars commercial surrogacy and allows the process only by close relatives for "altruistic" reasons.
A senior SP leader requesting anonymity said that the party chief had called a meeting to brief the MLAs about the voting process of the Rajya Sabha elections.
The case was registered following a complaint by the woman's son, who alleged that his mother was sexually abused by Revanna's son Prajwal.
The meeting at Gandhi's 10 Janpath residence was seen as very crucial in forging an Opposition unity with efforts on to reconcile differences between the Congress and some regional parties that have been at loggerheads traditionally.
'BJP's ultimate ambition is to control Bihar independently.'
Khan, who is currently lodged in Sitapur jail, has been replaced by Mohibullah Nadvi, a cleric of a mosque located on Delhi's Parliament Street.
To repeated questions, the SP chief asserted that the Congress was 'very much in the alliance'.