द्रवाणां कठिनानां च प्रस्थेन पलमानतः । स्वर्गप्राप्तिर्धनुर्मासे ह्युषःकाले च पूजनम् ६१ ।
By donating difficult-to-give substances in measured quantities (such as with a prāstha), one attains heaven. This is especially true when worshipping during the month of Dhanur and at the early morning hours.