Rolling Stones guitarist Keith Richards on Wednesday apologized for suggesting that eight times father Mick Jagger get a vasectomy.

Richards, 74, who has four children and five grandchildren himself, called band mate Jagger ¡°a randy old bastard¡± in an interview with the Wall Street Journal magazine, released on Wednesday.

¡°It¡¯s time for the snip ¡ª you can¡¯t be a father at that age. Those poor kids!¡± he said of the Rolling Stones frontman.

Jagger, 74, became a father for the eighth time in December 2016 when his dancer girlfriend, Melanie Hamrick, gave birth to a son in New York.

¡°I deeply regret the comments I made about Mick in the WSJ which were completely out of line. I have of course apologized to him in person,¡± Richards said in a Twitter statement.

Richards and Jagger, who have written most of the Rolling Stones songs over the rock band¡¯s five-decade career, are known for their love-hate relationship.

¡°It¡¯s been up and downhill, but if I¡¯m talking about the Rolling Stones, there ain¡¯t a frontman like Jagger,¡± he told the WSJ magazine in the interview for its March 10 edition. ¡°Don¡¯t matter how many bones you want to pick out of him, he¡¯s amazing to work with.¡±