Sleep is considered to be a mode of ignorance (tamas) due to which spiritual seekers are always cautioned for regulating it. However, for a keen devotee it is a medium to meet his beloved in his dream world. As we lose our physical identity while sleeping, it becomes a state of smaadhi if our conscience is absolutely immersed in His thoughts or imagination. However, it happens only when there is a burning desire in our heart to unite with Him.