One should not, however, keep his hands wet. Between the tip and the root of the thumb is situate the sacred Tirtha known by the name of Brahma.
स्पृशंश्चैव प्रतिष्ठेत च चाप्याट्टैण पाणिना॥ अङ्गुष्ठस्यान्तराले च ब्राह्यं तीर्थमुदाहृतम्।