Usher has told Justin Bieber to "savour" the "magic moments" of his baby boy's first few months

Usher - who has four children - told E!: "Just love and enjoy this moment, savour these moments.

"Between the first and the third months, these are the magic moments."

Usher sharing his tips for Justin as he embarks on his new chapter as a father comes after he recently recalled being at "war" with Justin Timberlake over signing the 'Sorry' hitmaker.

The 45-year-old singer revealed he and Justin, 43, both wanted to do a deal with Internet viral sensation in the early-2000s.

Usher told People: "When you are at the top of your game, some of the greatest things will be presented to you, and it was, I think, right after (my album) 'Confessions' that I was introduced to Justin Bieber and Scooter Braun (who became Justin's manager.)

"I presented Scooter an offer that I felt like he couldn't resist. We built a friendship, but this would obviously create a partnership that would span us forever, and it was a bit of a bidding war between me and Justin Timberlake."

Usher's label with Scooter Braun ended up victorious.

He added: "I was like, 'I'm not certain that I could understand each and every producer that this artist could benefit from, but what I can tell you is, I'm going to give you my passion, and I'm going to give you every bit of what I have to offer.'"

Usher is adamant there is no bitterness between him and Justin, insisting he has "always wanted to do a record" with the former *NSYNC singer.

He added: "I have reached out many times, but we've never managed to make it happen.

"I am motivated by people like Justin. I think that he is an amazing performer, and I think that he has a legacy that should be respected and not compared to anybody else."