The 11th day of the bright half of Ashadh is known as Padma Ekadashi, more commonly known as Devshayani Ekadashi. It is the beginning of Chaturmaas — “chatur” means four and “maas” means months — the four auspicious monsoon months which are full of festivals and celebrations. In these four months the atmosphere is heavy with moisture and life is at its most vibrant.
On Devshayani Ekadashi, Lord Vishnu enters His divine sleep (Yoga Nidra), resting on the serpent Shesha in the cosmic ocean. He remains in this divine rest until Prabodhini Ekadashi (Dev Prabhodhini Ekadashi) in the month of Kartik — a period of four months, which is Chaturmaas.
During these four months, marriage ceremonies and other auspicious activities are traditionally paused out of respect for the Lord’s divine rest. Spiritual activities, however, are intensified — this is the time for extra penance, scripture study, and devotion.
Devshayani Ekadashi is one of the most important Ekadashis in the Hindu calendar. Observing this Ekadashi with a full fast, performing puja of the Lord in His reclining form (Anantashayana), and spending the night in devotion and jagran bestows great spiritual merit. It is said that those who observe this Ekadashi will not face suffering in this life and will attain divine grace.