Maharshi Bhrigu was one of the Manasputras (born by a wish) of Lord Brahma. He was married to Khyati, the daughter of Daksha. Two sons, Dhata and Vidhata and a daughter Shri were born to them. Maharshi Bhrigu is also called Prajapati (creator) as he was created by Lord Brahma to help him in the process of creation of the universe.
His daughter Shri, was married to none other than Lord Vishnu (Narayana). Maharshi Bhrigu had accomplished many Yagyas and had helped others to accomplish them. With his powers, he fulfilled the wishes of people for begetting sons. During the two months of Shravana and Bhadrapaksha, he made the chariot of the Sun God as his abode. We get this description in all the Puranas.
A famous incident in his life has been described below: Once, sages from different places had gathered on the banks of the Saraswati river. A debate started among them as to who was the greatest among the three; Lord Brahma, Lord Vishnu or Lord Mahesh. When they were unable to come to any conclusion, they chose Bhrigu as their representative to personally test all the three deities and to decide as to who is the greatest.
His first visit was at Lord Brahma's abode. Bhrigu neither bowed in reverence nor greeted Him. Brahma felt insulted but did not lose his temper.
After that, Bhrigu went to 'Kailash Parvata' to meet Lord Shiva. Seeing Bhrigu approaching, Lord Shiva wanted to embrace him. But Bhrigu who wanted to test his greatness, replied sarcastically: "Since you don't follow the right course, I will not accept your respect and service".
Hearing Bhrigu's words, Lord Shiva lost his temper and ran after him with his 'Trishula' (trident). At last Parvati intervened and requested Lord Shiva to spare Bhrigu.
Ultimately, Bhrigu went to Vaikunthloka to see Lord Vishnu. Lord Vishnu was relaxing at that moment.
Maharshi Bhrigu kicked Lord Vishnu on his chest. Lord Vishnu woke up as a result of the blow, bowed in reverence and said: "O Lord, be seated, I was not aware of your arrival, hence I could not welcome you. Forgive me! Your feet must be in pain as my chest is hard as 'Vajra' (mace)".
Saying this, Lord Vishnu started pressing his legs and further said: "O Brahmin, you have been most gracious to me, as the soil of your feet would remain on my chest forever."
After his return, Bhrigu narrated the whole story to the assembly of the sages. Everyone concluded that it was Lord Vishnu who was the greatest among the trinity and only He is entitled to be worshipped by devotees as He loves virtuosity.