Allahabad: Sadhus prepare to puff a ‘chillum’ (pipe) after taking holy dip at Sangam, the confluence of the Ganges, Yamuna and Saraswati rivers, on the occasion of Purnima, the first auspicious bathing day of Magh Mela, in Allahabad on Monday. PTI Photo (PTI1_9_2012_000034B)