Umno has rejected Lim Kit Siang's offer to speak at the party's information sessions on the 1990s foreign exchange (forex) scandal.

Umno information chief Annuar Musa said the party does not welcome at its events those who do not uphold the Federal Constitution and Rukunegara and disrespect syariah law and Islam.

"Umno's platform is unsuitable for a politician like him.

"We are also concerned that Kit Siang will use this opportunity to defend his son, Penang Chief Minister Lim Guan Eng, who is now facing charges.

"(Kit Siang would also) sneakily try to break up Malay unity in DAP's bid to control national politics," Annuar said in a statement.

Lim had earlier offered to speak at the Umno info blitz starting next week, which are organised to clarify the difference between the forex scandal and 1MDB.