Shiva Purana
शक्तः कृतालयः पश्चात्प्रतिष्ठाविधिमाचरेत् ॥ अशक्तश्चेत्प्रतिष्ठाप्य लिंगं बेरमथापि वा ॥ ४८ ॥
If he is able to do so, he should then perform the ritual of establishment. If he is unable to do so he should install a lingam or a berry tree.
english translation
zaktaH kRtAlayaH pazcAtpratiSThAvidhimAcaret ॥ azaktazcetpratiSThApya liMgaM beramathApi vA ॥ 48 ॥
hk transliteration by Sanscript