Offset Shares Photo of Son Wave, 2½, Posing with Stacks of Cash amid Divorce from Cardi B

The former couple, who share daughter Kulture Kiari, 6, and son Wave Set, 2½, filed for divorce on Wednesday, July 31

Offset is spending some quality time with his son amid his split from wife Cardi B.

On Tuesday, Aug. 6, the rapper, 32, shared a picture to his Instagram Stories of his son Wave Set, 2½, holding stacks of cash up to his ear.

The post comes less than a week after Cardi, 31, filed for divorce from the "Bodak Yellow" rapper on July 31 after six years of marriage, a representative for the "WAP" singer confirmed to PEOPLE on Aug. 1.

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Related: Cardi B Divorce Filing 'Wasn't an Easy Decision' (Exclusive Source)

Cardi, who also revealed on Aug. 1 that she is currently pregnant and expecting her third child, is seeking primary custody of Wave and their daughter Kulture Kiari, 6, The New York Post's Page Six reported.

The soon-to-be mom of three announced her pregnancy news on Instagram just hours after the divorce news broke.

"With every ending comes a new beginning! I am so grateful to have shared this season with you, you have brought me more love, more life and most of all renewed my power!" she wrote to her baby on the way in the caption.

Another source exclusively told PEOPLE that "filing for divorce again wasn't an easy decision" for the rapper. "She has two kids already, is pregnant and is also a working mom. She’d love to have a great marriage too, but she needs to end it."

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Additionally, the insider noted that people close to Cardi "support" her decision to end the marriage.

"It’s been a long time coming," they add. "It’s not just one issue. She’s matured a lot. She knows exactly what she wants her life to look like. She’s super focused on her kids and work."

Despite issues between the former couple leading to them dissolving their union, the source maintains "they are still friendly and will co-parent.

"Offset has always been supportive of Cardi and their family," an additional source added.

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